Question
Download Solution PDFFind the average of the first 18 multiples of 9.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
We need to find the average of the first 18 multiples of 9.
Formula used:
Average of first n multiples of a number = (First multiple + Last multiple) / 2
First multiple of 9 = 9 × 1 = 9
Last multiple (18th multiple) of 9 = 9 × 18 = 162
Calculation:
Average = (9 + 162) / 2
⇒ Average = 171 / 2
⇒ Average = 85.5
∴ The average of the first 18 multiples of 9 is 85.5.
Last updated on Jul 22, 2025
-> SSC Selection Post Phase 13 Admit Card has been released today on 22nd July 2025 @ssc.gov.in.
-> The SSC Phase 13 CBT Exam is scheduled for 24th, 25th, 26th, 28th, 29th, 30th, 31st July and 1st August, 2025.
-> The Staff Selection Commission had officially released the SSC Selection Post Phase 13 Notification 2025 on its official website at ssc.gov.in.
-> A total number of 2423 Vacancies have been announced for various selection posts under Government of India.
-> The SSC Selection Post Phase 13 exam is conducted for recruitment to posts of Matriculation, Higher Secondary, and Graduate Levels.
-> The selection process includes a CBT and Document Verification.
-> Some of the posts offered through this exam include Laboratory Assistant, Deputy Ranger, Upper Division Clerk (UDC), and more.
-> Enhance your exam preparation with the SSC Selection Post Previous Year Papers & SSC Selection Post Mock Tests for practice & revision.